Maximum rates of climate change are systematically underestimated in the geological record

David B Kemp, Kilian Eichenseer, Wolfgang Kiessling

Research output: Contribution to journalArticle

26 Citations (Scopus)
5 Downloads (Pure)

Abstract

Recently observed rates of environmental change are typically much higher than those inferred for the geological past. At the same time, the magnitudes of ancient changes were often substantially greater than those established in recent history. The most pertinent disparity, however, between recent and geological rates is the timespan over which the rates are measured, which typically differ by several orders of magnitude. Here we show that rates of marked temperature changes inferred from proxy data in Earth history scale with measurement timespan as an approximate power law across nearly six orders of magnitude (102 to >107 years). This scaling reveals how climate signals measured in the geological record alias transient variability, even during the most pronounced climatic perturbations of the Phanerozoic. Our findings indicate that the true attainable pace of climate change on timescales of greatest societal relevance is underestimated in geological archives.
Original languageEnglish
Article number8890
Number of pages6
JournalNature Communications
Volume6
Early online date10 Nov 2015
DOIs
Publication statusPublished - 10 Nov 2015

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